Lock mechanism for firearms.



G. HAMMOND. LOCK MECHANISM FOR FIREARMS.

' APPUCATION FILED JULY 2|. I915- A 1,1 84,950. Patented May 30,1916.

WITNESSES.-

UNITED STATES PATENT OFFICE.

GRANT -HAMMOND, OF HARTFORD. CONNECTICUT. ASSIGNOR TO DALTON ARMS COR-PORATION. OF NEW YORK. N. Y.. A CORPORATTON OF NEW YORK.

LOCK MECHANISM FOR FIREARMS.

Application filed July 21,1915.

Be it known that l. (luixx'r llxunoxn, a eitixen of the l'nited States.and a resident of Hartford. in the eounty of Hartford and State of('onneetieut. have invented a new and Improved Lot-k .\lerhani m t'orFirearms, of which the following is a speeifieation.

My invention relates to the meehanism for eontrolling the operation ofthe tiring pin in firearms, and an objeet of my invention, among others,is to provide meehanism for this purpose that shall be cheap in eonstruction, etfieient in operation, and little liable to be injuriouslyatfeeted by dust, smoke, or other impurities.

A form of firearm embodying, my invention and in the construction anduse of which the objects herein set out, as well as others, may beattained, is illustrated in the accompanying drawings, in which" Figurel is the side view of a portion of a firearm embodying my invention,with parts broken away to show the eonstruetion. Fig. 2 is a detail Viewin cross section through the, tirearm on plane denoted by dotted line 22 in Fig. 1.

My invention is not iimited to use in a firearm of any speeialeonstruetion, but as it readily adapts itself to that type that is heldby a. person and discharged from the shoulder, sueh type has beenseleeted by me for the purpose of illustration herein.

In the aeeompanying: drawings the numeral 1O denotes a stock and ll thelore end of my improved firearm, which parts are preferably eonstruetedof wood in a manner common to devices of this kind, and which parts areproperly chambered and recessed to receive the metallie members of thestructure, which. in the present instance. include a receiver '12, atrigger plate 1 se cured to the reeeiver by serews l5 and a barrel 1 1secured to the reeeiver in any suit able manner. A breech-bolt It; ismounted for reciprocating movement in a lueeeln bolt ehamber in thereceiver, and a tiring pin 17 extemling: into the breeeh-lmlt has a head18 secured thereto and projecting beyond the end thereof. As theeonstruetion of the parts above referred to will be readily understood,turther and detailed deseription is omitted herein.

A breeelnbolt sleeve 19 is seeured to the rear end of the breech-bolt asby means of Specification of Letters Patent.

Patented May 30, 1916.

Serial No. 41.113

serew threads. this slee\e ha ring: a threaded leee s it) to rereive theend of said bolt, the latter being: rotatable to a limited extent withinthis I' *(t -l. rere s 21 For the reeeption ol the ne l; ot the head ofthe irin; pin extends inwardly from the rear end of the breerh-boltsleeve. the inner end of said neek resting against the bottom ot thisre- (Jess. and a tiring pin opening 22 extends between the reeesses fi land 21, a slot Q-l through the bottom of the breech-bolt sleeve at thisend also cutting into these recesses A breech-bolt artuatimg handle 24is secured to the hreeeh-bolt in any suitable manner.

A neek 25 projects from the firing pin head and a (forking prong: Qt; islocated in the slot 23 in the reech-bolt sleeve, the eoele in; prong:being: provided with a cooking shoulder 27 located in position to beengaged by a sear 52 mounted and loeated in a slot eutending: throughthe bottom of the reeeiver at its rear end. A trigger is Slotted at itsupper end, within which slot the sear 28 is located. a pivot pin 30extending through the side parts of the trigger thus formed andpivotally eonneeting it to the sear. These side. parts of the triggerare provided with an initial lwaring! ill and a disengagin; hearing 32,the former being loeated nearest the pivot i'l l, first engaging theframe and serxing to impart initial movement to the sear with a eertainamount of power t'ransmittial from the trigger, and the latter rug "airthe Frame just before the sear lu-nonle disengaged from the shoulder 9?.aetingf at the time of disengagemei'it ot the sea 2'l'rom said shoulderand requiring a little more power to be applied from the trigger than atthe initial movement of the sear. 'lhis multiple fulcrum enables thegreatest amount of power to be applied at the time of initial movementof the sear, and up to nearly the point of disengagement, ot' the searfrom the tiring; pin, and at the time of diseiuragement of said parts,and when l( power is required to disengagethem the second 't'ulrrum isbrought into aetion. 'lhis multiple tulerum enables the operator to knowwhen the point of disengagement ol the ear and tiring pin has beennearly reaehed by apprising him through the feeling" of the trigger whenthe seeond 'ul rnm romes i o action.

pl'es er IL? is seated in a well extending downwardly from the upperedge (if the trigger between the side parts 34, this presser beingseated upon a spring 35 and acting to retain the trigger 29 with itslower end in its forward position. The e0nstruetion herein shown *anddescribed may be changed to a greater or lesser extent and yet be withinthe spirit and intent of the invention.

I elation- 1.. A firing mechanism for a firearm including a receiver, asear pivotally mounted in said receiver, a trigger pivotallv mounted onthe sear and having a part to engage said rereiver, and a spring pressedmember loeated in one of said parta and preesing against the oppositepart to three both of said members to their positions of rest,

2. A firing mechanism for a firearm including a receiver, a searpivotally mounted in said reeeiver, a trigger pivotally mounted on thesear and having a part to engage said reeeiver, and a spring pressedmember located in the trigger and pressing against the sear to forceboth the trigger and seal to their positions of rest.

3. A tiring mechanism for a firearm including a receiver having a lotextending through its bottom wall, a breech bolt mounted in therereiver. a $0211 pivotallv mounted in said slot, a trigger pivotallyattached to said sear, and a spring pressed member located between thetrigger and sear to force the sear toward the breechbolt and to forcethe trigger.

4. A tiring mechanism for a firearm inr-luding a receiver having a slotthrough its bottom wall, a breech-bolt mounted in the receiver, a searpivotall}; mounted in said slot a trigger having a forked end withinwhich said ear is received. said trigger be ing pivotally attached tothe sear, and a. spring actuated presser n'ioimted in the trigger andthrusting against said sear to retain the trigger and ear in theirpoeitions of rest.

A firing merhanism for a firearm ineluding a rereiver, a sear pivotallvmounted in said receiver, a trigger having" a grooved end within whichsaid sear is reeeived, a well extending invvardl from the bottom of saidgroove, a pivot uniting the sear and trigger, a presaer mounted in saidwell. and a spring underlying the pi'wser.

GRANT llAiiMflNl) Vi'itnesseez An'riu'n B. JKXhIKS E. F. lCA'roN.

